Merge pull request #1734 from bnbarham/pad-install-name

[CMake] Allow install_name_tool to edit shared library load paths

Author: bnbarham

cmake/modules/AddSwiftHostLibrary.cmake

@@ -70,6 +70,13 @@ function(add_swift_host_library name)
     BUILD_WITH_INSTALL_RPATH YES
   )
 
+  get_target_property(lib_type ${name} TYPE)
+  if(lib_type STREQUAL SHARED_LIBRARY AND CMAKE_SYSTEM_NAME STREQUAL Darwin)
+    # Allow install_name_tool to update paths (for rdar://109473564)
+    set_property(TARGET ${name} APPEND_STRING PROPERTY
+                 LINK_FLAGS " -Xlinker -headerpad_max_install_names")
+  endif()
+
   # Install this target
   install(TARGETS ${name}
     EXPORT SwiftSyntaxTargets